A BERLIN K.P.M. PLAQUE OF AN EMPIRE BEAUTY, 19TH CENTURY, IMPRESSED K.P.M. AND SCEPTRE MARK, SIGNED MARY BATTAILE 1791, INSCRIBED IN INK ON THE REVERSE MARY BATTAILE UNDER INSTRUCTION OF F.O. PUESCH, painted with the torso of an Empire beauty posed on a recamier in the manner of David--9 3/8 x 6¼in., framed